61598944699 has 18 divisors (see below), whose sum is σ = 65628151980. Its totient is φ = 57656886912.

The previous prime is 61598944669. The next prime is 61598944703. The reversal of 61598944699 is 99644989516.

It is not a de Polignac number, because 61598944699 - 2¹¹ = 61598942651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61598944619) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 104938284 + ... + 104938870.

Almost surely, 2^61598944699 is an apocalyptic number.

61598944699 is a deficient number, since it is larger than the sum of its proper divisors (4029207281).

61598944699 is an frugal number, since it uses more digits than its factorization.

61598944699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387 (or 703 counting only the distinct ones).

The product of its digits is 151165440, while the sum is 70.

The spelling of 61598944699 in words is "sixty-one billion, five hundred ninety-eight million, nine hundred forty-four thousand, six hundred ninety-nine".